public long contentLength() throws IOException {
      return delegate.contentLength();
    }

    @Override
    public void writeTo(BufferedSink sink) throws IOException {
      BufferedSink bufferedSink = Okio.buffer(sink(sink));
      delegate.writeTo(bufferedSink);
      bufferedSink.flush();
    }

    public Sink sink(Sink sink) {
      return new ForwardingSink(sink) {
        private long totalBytesWritten = 0L;

import okhttp3.Response
import okhttp3.mockwebserver.MockResponse
import okhttp3.mockwebserver.MockWebServer
import okhttp3.mockwebserver.SocketPolicy
import okhttp3.testing.PlatformRule
import okio.Buffer
import okio.BufferedSink
import org.junit.jupiter.api.AfterEach
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Tag
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.extension.RegisterExtension

            return delegate.contentLength();
          }

          @Override public void writeTo(BufferedSink sink) throws IOException {
            BufferedSink bufferedSink = Okio.buffer(sink(sink));
            delegate.writeTo(bufferedSink);
            bufferedSink.flush();
          }

          public Sink sink(Sink sink) {
            return new ForwardingSink(sink) {

import okhttp3.CallEvent.SecureConnectEnd
import okhttp3.CallEvent.SecureConnectStart
import okhttp3.Headers.Companion.headersOf
import okhttp3.internal.duplex.AsyncRequestBody
import okhttp3.testing.PlatformRule
import okio.BufferedSink
import okio.IOException
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Disabled
import org.junit.jupiter.api.Tag
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.Timeout

      override fun contentLength(): Long = original!!.contentLength()

      override fun writeTo(sink: BufferedSink) {
        val uppercase = uppercase(sink)
        val bufferedSink = uppercase.buffer()
        original!!.writeTo(bufferedSink)
        bufferedSink.emit()
      }
    }

  private fun uppercase(original: BufferedSink): Sink =
    object : ForwardingSink(original) {
      override fun write(

import okhttp3.RequestBody.Companion.toRequestBody
import okhttp3.WebSocketListener
import okhttp3.logging.HttpLoggingInterceptor.Level
import okhttp3.testing.PlatformRule
import okio.Buffer
import okio.BufferedSink
import okio.ByteString.Companion.decodeBase64
import org.junit.jupiter.api.Assertions.fail
import org.junit.jupiter.api.Assumptions
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Test

import okhttp3.internal.http.CancelTest.ConnectionType.HTTP
import okhttp3.internal.http.CancelTest.ConnectionType.HTTPS
import okhttp3.testing.PlatformRule
import okio.Buffer
import okio.BufferedSink
import org.junit.jupiter.api.Assertions.assertEquals
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Tag
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.Timeout

import okhttp3.internal.RecordingOkAuthenticator
import okhttp3.internal.duplex.AsyncRequestBody
import okhttp3.internal.duplex.MockSocketHandler
import okhttp3.testing.PlatformRule
import okio.BufferedSink
import org.junit.jupiter.api.AfterEach
import org.junit.jupiter.api.Assertions.assertTrue
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Disabled
import org.junit.jupiter.api.Tag

import okhttp3.okio.LoggingFilesystem
import okhttp3.testing.Flaky
import okhttp3.testing.PlatformRule
import okhttp3.tls.HandshakeCertificates
import okhttp3.tls.HeldCertificate
import okio.Buffer
import okio.BufferedSink
import okio.ByteString
import okio.ForwardingSource
import okio.GzipSink
import okio.Path.Companion.toPath
import okio.buffer
import okio.fakefilesystem.FakeFileSystem
import okio.use

import okhttp3.internal.connection.RealConnection
import okhttp3.internal.discard
import okhttp3.testing.Flaky
import okhttp3.testing.PlatformRule
import okhttp3.tls.HandshakeCertificates
import okio.Buffer
import okio.BufferedSink
import okio.GzipSink
import okio.Path.Companion.toPath
import okio.buffer
import okio.fakefilesystem.FakeFileSystem
import org.junit.jupiter.api.AfterEach
import org.junit.jupiter.api.Assertions.assertArrayEquals